Enhancing the conductivity, stability and flexibility of Ti3C2Tx MXenes by regulating etching conditions

Yang, Yina; Cao, Zherui; Shi, Lei; Wang, Ranran; Sun, Jing

doi:10.1016/j.apsusc.2020.147475

Cited by 21 publications

(11 citation statements)

References 43 publications

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“…46 This is further confirmed by the O 1s spectra in Figure 3e, which shows that the binding energies of Ti−O and C−Ti−OH are 529 and 523 eV, respectively, indicating that the main terminations of Ti 3 C 2 T x are −O and −OH. 46 The O 1s spectra in Figure 3f shows a peak at 531.7 eV corresponding to the Zn−O−Zn bonds. These results indicate that the terminal groups enable ZnO to grow on the surface of Ti 3 C 2 T x .…”

Section: Resultssupporting

confidence: 60%

“…Figure c,d reflects the 2p spectrum of Ti with the binding energies of Ti–C, Ti–OH, and Ti–O located at 455, 456, and 458.3 eV, respectively. The strong Ti–OH peak appearing in Figure d,e indicates that the −OH dangling bonds are rich in Ti 3 C 2 , which is necessary for the growth of ZnO . This is further confirmed by the O 1s spectra in Figure e, which shows that the binding energies of Ti–O and C–Ti–OH are 529 and 523 eV, respectively, indicating that the main terminations of Ti 3 C 2 T x are −O and −OH .…”

Section: Resultsmentioning

confidence: 53%

“…The strong Ti−OH peak appearing in Figure 3d,e indicates that the −OH dangling bonds are rich in Ti 3 C 2 , which is necessary for the growth of ZnO. 46 This is further confirmed by the O 1s spectra in Figure 3e, which shows that the binding energies of Ti−O and C−Ti−OH are 529 and 523 eV, respectively, indicating that the main terminations of Ti 3 C 2 T x are −O and −OH. 46 The O 1s spectra in Figure 3f shows a peak at 531.7 eV corresponding to the Zn−O−Zn bonds.…”

Section: Resultsmentioning

confidence: 95%

See 2 more Smart Citations

Highly Thermoelectric ZnO@MXene (Ti₃C₂T_x) Composite Films Grown by Atomic Layer Deposition

Yang

Dai

et al. 2022

ACS Appl. Mater. Interfaces

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Due to its unique high conductivity and flexibility, the two-dimensional MXene material (Ti3C2T x ) is expected to possess great potential in the thermoelectric field. However, the low thermoelectric performance from high thermal conductivity and a low Seebeck coefficient has limited its practical application. In this report, we demonstrate the uniform growth of ZnO layers on the laminar Ti3C2T x membrane by atomic layer deposition (ALD). Benefiting from the low-temperature deposition characteristics of the ALD technique, the ZnO@Ti3C2T x composite films maintain the basic apparent morphology of the original films after the deposition. We reveal that the Schottky barrier formed between ZnO and Ti3C2T x exhibits an energy-filtering effect, significantly enhancing the Seebeck coefficient to result in more than a double increase in the power factor. Meanwhile, the strong phonon-interface scattering between ZnO and Ti3C2T x is found to reduce the thermal conductivity of the composite films by a factor of four as compared to pure Ti3C2T x ones, further improving the overall thermoelectric properties of the ZnO@Ti3C2T x composite films. Our investigation provides an ALD-based strategy for growing wide band gap layers on the narrow band gap films to improve the thermoelectric performance of various MXene materials.

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Section: Resultssupporting

confidence: 60%

Section: Resultsmentioning

confidence: 53%

Section: Resultsmentioning

confidence: 95%

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Highly Thermoelectric ZnO@MXene (Ti₃C₂T_x) Composite Films Grown by Atomic Layer Deposition

Yang

Dai

et al. 2022

ACS Appl. Mater. Interfaces

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“…For example, Sun et al used HF, LiF/HCl, and TMAOH etching agents to synthesize three different Ti 3 C 2 T x to explore the influence of the type of etching agent on the stability of this material. 47 The experimental results showed that TM–TI 3 C 2 T x had the best stability, which is attributed to the Al(OH) 4− terminal group and TMA + protection. Unocic et al studied the atomic proportional structure and defects of MXenes in detail.…”

Section: Structure Properties and Chemical/mechanical Stability Of Mx...mentioning

confidence: 93%

Recent advances in noble metal MXene-based catalysts for electrocatalysis

Kong

Deng

2022

J. Mater. Chem. A

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“…51 There are some modified methods through changing the etching temperature, HF concentration (10−50%), and reaction time to obtain flakes of different sizes, excellent conductivities, and other properties of Ti 3 C 2 T x MXenes. 56 Figure 2a shows SEM images of the Ti 3 AlC 2 MAX phase to multilayer Ti 3 C 2 T x and delaminated Ti 3 C 2 T x MXene and corresponding schematic (Figure 2b) of MXene preparation using the MAX phase. However, HF refers to a highly corrosive and harmful chemical with environmental and health concerns.…”

Section: Synthesis and Processing Of Ti 3 C 2 T X Mxenementioning

confidence: 99%

Ti₃C₂T_x MXene: A New Promising 2D Material for Optoelectronics

Vadakke Neelamana,

Rekha,

Bhat

2023

Chem. Mater.

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MXenes are the new members in the family of two-dimensional (2D) layered materials composed of transitional metal carbides, nitrides, or carbonitrides. Among all other MXenes, Ti3C2T x MXene is the most studied one due to the exceptional properties that make it suitable for various applications, including optoelectronics. Ti3C2T x MXene can be fabricated and processed in a variety of scalable and cost-effective ways. MXenes are solution-processable materials that can be deposited by spin, spray, or dip coating, painting, or printing. They exhibit excellent optical transparency, high metallic conductivity, efficient photothermal conversion, plasmonic behavior, and tunability of the optical response over traditional 2D materials. These features have led to a fast evolution of this material with many explorations of its applications in the field of optoelectronics. This short review summarizes the recent updates on the synthesis, optical, as well as electronic properties, and the various optoelectronic applications of Ti3C2T x MXene in the materials point of view. The challenges to be overcome for their successful integration into the optoelectronics domain and opportunities for future explorations are also discussed.

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Enhancing the conductivity, stability and flexibility of Ti3C2Tx MXenes by regulating etching conditions

Cited by 21 publications

References 43 publications

Highly Thermoelectric ZnO@MXene (Ti₃C₂T_x) Composite Films Grown by Atomic Layer Deposition

Highly Thermoelectric ZnO@MXene (Ti₃C₂T_x) Composite Films Grown by Atomic Layer Deposition

Recent advances in noble metal MXene-based catalysts for electrocatalysis

Ti₃C₂T_x MXene: A New Promising 2D Material for Optoelectronics

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Enhancing the conductivity, stability and flexibility of Ti3C2Tx MXenes by regulating etching conditions

Cited by 21 publications

References 43 publications

Highly Thermoelectric ZnO@MXene (Ti3C2Tx) Composite Films Grown by Atomic Layer Deposition

Highly Thermoelectric ZnO@MXene (Ti3C2Tx) Composite Films Grown by Atomic Layer Deposition

Recent advances in noble metal MXene-based catalysts for electrocatalysis

Ti3C2Tx MXene: A New Promising 2D Material for Optoelectronics

Contact Info

Product

Resources

About

Highly Thermoelectric ZnO@MXene (Ti₃C₂T_x) Composite Films Grown by Atomic Layer Deposition

Highly Thermoelectric ZnO@MXene (Ti₃C₂T_x) Composite Films Grown by Atomic Layer Deposition

Ti₃C₂T_x MXene: A New Promising 2D Material for Optoelectronics